Is there a public exploit for CVE-2026-102267?

No public exploit for CVE-2026-102267 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-102267?

CVE-2026-102267 scores CVSS 9.1 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 0.16%.

What does CVE-2026-102267 affect?

CVE-2026-102267 affects jpadilla PyJWT.

9.1 Critical

PyJWT is a Python implementation of JSON Web Token standards.

CVE-2026-102267

Summary PyJWT 2.13.0 PyJWKClient followed HTTP redirects while fetching a JWKS, without validating the redirect destination. A configured trusted endpoint could therefore redirect the client to a different host. Impact When an application uses PyJWKClient with caller-supplied request headers and an attacker can influence the configured endpoint's response, the redirected request could expose those headers and the redirected response could be used as authoritative key material. This could cause JWKS trust poisoning and, in affected mixed-configuration applications, forged JWT acceptance. The issue requires an attacker-influenced redirect from the configured JWKS endpoint; it is not triggered by a token kid alone. Affected versions PyJWT <= 2.13.0. Fix The issue is fixed on master in commit [0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56](https://github.com/jpadilla/pyjwt/commit/0a795b8e1f6ef08f634aa7086fc41cc6d5ce3e56). PyJWKClient now disables automatic redirects for JWKS fetches. Regression tests verify that a redirect is rejected without contacting its destination, while normal fetches, headers, caching, errors, timeouts, and SSL context remain covered. The fix is present in the…

Assessment

CVSS: 9.1 (v3.1)
Severity: Critical
EPSS: 0.16% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 28 September 2026
Last updated: 7 October 2026
Affected: jpadilla · pyjwt · PyJWT
Weakness: CWE-200, CWE-345, CWE-918
Assigner: security-advisories@github.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

At the source

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